/*
 * Copyright (c) 2008 Openviewing
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Created: 28-May-2005 15:21:47
 */
package org.openviewing.foundation.control;

/** Application Controller strategy.
 *
 *  <p>This follows the Strategy design pattern<sup>[GOF]</sup> that outlines the application controller from the Application Controller design pattern<sup>[FOWLER]</sup>.
 *  This strategy outlines the centralisation of handling the user interface navigation and the flow the of an application.</p>
 *  
 *  <h4>References</h4>
 *  <ul>
 *    <li><b>[FOWLER]</b> Fowler, Martin. <i>Patterns Of Enterprise Application Architecture.</i> Addison-Wesley, 2003.</li>
 *    <li><b>[GOF]</b> Gamma, Erich. Helm, Richard. Johnson, Ralph. Vlissides, Johhn. <i>Design Patterns, Elements of reuable Object-Oriented Software</i> Addison-Wesley, 1995.</li>
 *  </ul>
 */
public interface ApplicationControllerStrategy
{
    /** Domain Command accessor.
     *
     *  This determines the command to be executed based on the context, which can be passed during the construction of the implementing Class.
     *
     *  @param  context This represents the current context of the application.
     *  @return The domain command, as a Command Class, that can be executed by the Front Controller.
     *  @throws UnknownCommandException When a command can not be found, either undefined in the configuration or the class can not be found.
     */
    public DomainCommandStrategy getDomainCommand(Object context) throws UnknownCommandException;
}
